/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
Returns a valid join info object from a json blob
[IOnlinePartyJoinInfoConstPtr](API\Plugins\OnlineSubsystem\Interfaces\IOnlinePartyJoinInfoConstPtr) MakeJoinInfoFromJson ( const [FString](API\Runtime\Core\Containers\FString) & JoinInfoJson )